I code for every browser I can think of. Even if there's only 1 out of a million people that use it and may find my page, that's still a potential. It's ridiculous to lose out on visitors because of a bad code job. Standards or not, I don't care much. I try to do it right, and now that I know how to do it right, I've been benefitting from SEO. All it comes down to is visits, and every little thing helps.